1   /**
2    * Copyright (c) 2000-2009 Liferay, Inc. All rights reserved.
3    *
4    *
5    *
6    *
7    * The contents of this file are subject to the terms of the Liferay Enterprise
8    * Subscription License ("License"). You may not use this file except in
9    * compliance with the License. You can obtain a copy of the License by
10   * contacting Liferay, Inc. See the License for the specific language governing
11   * permissions and limitations under the License, including but not limited to
12   * distribution rights of the Software.
13   *
14   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
20   * SOFTWARE.
21   */
22  
23  package com.liferay.portlet;
24  
25  import com.liferay.portal.model.PortletApp;
26  
27  import java.util.Map;
28  import java.util.concurrent.ConcurrentHashMap;
29  
30  import javax.portlet.PortletContext;
31  import javax.portlet.PortletException;
32  import javax.portlet.UnavailableException;
33  import javax.portlet.filter.FilterConfig;
34  import javax.portlet.filter.PortletFilter;
35  
36  /**
37   * <a href="PortletFilterFactory.java.html"><b><i>View Source</i></b></a>
38   *
39   * @author Brian Wing Shun Chan
40   */
41  public class PortletFilterFactory {
42  
43      public static PortletFilter create(
44              com.liferay.portal.model.PortletFilter portletFilterModel,
45              PortletContext ctx)
46          throws PortletException {
47  
48          return _instance._create(portletFilterModel, ctx);
49      }
50  
51      public static void destroy(
52          com.liferay.portal.model.PortletFilter portletFilterModel) {
53  
54          _instance._destroy(portletFilterModel);
55      }
56  
57      private PortletFilterFactory() {
58          _pool = new ConcurrentHashMap<String, Map<String, PortletFilter>>();
59      }
60  
61      private PortletFilter _create(
62              com.liferay.portal.model.PortletFilter portletFilterModel,
63              PortletContext ctx)
64          throws PortletException {
65  
66          PortletApp portletApp = portletFilterModel.getPortletApp();
67  
68          Map<String, PortletFilter> portletFilters = _pool.get(
69              portletApp.getServletContextName());
70  
71          if (portletFilters == null) {
72              portletFilters = new ConcurrentHashMap<String, PortletFilter>();
73  
74              _pool.put(portletApp.getServletContextName(), portletFilters);
75          }
76  
77          PortletFilter portletFilter = portletFilters.get(
78              portletFilterModel.getFilterName());
79  
80          if (portletFilter == null) {
81              FilterConfig filterConfig =
82                  FilterConfigFactory.create(portletFilterModel, ctx);
83  
84              if (portletApp.isWARFile()) {
85                  PortletContextBag portletContextBag = PortletContextBagPool.get(
86                      portletApp.getServletContextName());
87  
88                  portletFilter = portletContextBag.getPortletFilters().get(
89                      portletFilterModel.getFilterName());
90  
91                  portletFilter = _init(
92                      portletFilterModel, filterConfig, portletFilter);
93              }
94              else {
95                  portletFilter = _init(portletFilterModel, filterConfig);
96              }
97  
98              portletFilters.put(
99                  portletFilterModel.getFilterName(), portletFilter);
100         }
101 
102         return portletFilter;
103     }
104 
105     private void _destroy(
106         com.liferay.portal.model.PortletFilter portletFilterModel) {
107 
108         PortletApp portletApp = portletFilterModel.getPortletApp();
109 
110         Map<String, PortletFilter> portletFilters = _pool.get(
111             portletApp.getServletContextName());
112 
113         if (portletFilters == null) {
114             return;
115         }
116 
117         PortletFilter portletFilter = portletFilters.get(
118             portletFilterModel.getFilterName());
119 
120         if (portletFilter == null) {
121             return;
122         }
123 
124         portletFilter.destroy();
125 
126         portletFilters.remove(portletFilterModel.getFilterName());
127     }
128 
129     private PortletFilter _init(
130             com.liferay.portal.model.PortletFilter portletFilterModel,
131             FilterConfig filterConfig)
132         throws PortletException {
133 
134         return _init(portletFilterModel, filterConfig, null);
135     }
136 
137     private PortletFilter _init(
138             com.liferay.portal.model.PortletFilter portletFilterModel,
139             FilterConfig filterConfig, PortletFilter portletFilter)
140         throws PortletException {
141 
142         try {
143             if (portletFilter == null) {
144                 portletFilter = (PortletFilter)Class.forName(
145                     portletFilterModel.getFilterClass()).newInstance();
146             }
147 
148             portletFilter.init(filterConfig);
149         }
150         catch (ClassNotFoundException cnofe) {
151             throw new UnavailableException(cnofe.getMessage());
152         }
153         catch (InstantiationException ie) {
154             throw new UnavailableException(ie.getMessage());
155         }
156         catch (IllegalAccessException iae) {
157             throw new UnavailableException(iae.getMessage());
158         }
159 
160         return portletFilter;
161     }
162 
163     private static PortletFilterFactory _instance = new PortletFilterFactory();
164 
165     private Map<String, Map<String, PortletFilter>> _pool;
166 
167 }